Re: [PATCH v11 0/3] Switchtec Switch DMA Engine Driver

Christoph Hellwig
2025-12-16T07:55:02Z

On Mon, Dec 15, 2025 at 11:16:46AM -0700, Logan Gunthorpe wrote:
> This is v11 of the Switchtec Switch DMA Engine Driver. We sent v10 in the
> previous cycle with almost no feedback.
>
> To reiterate the response to the feedback we keep getting: virt-dma in
> not appropriate for this driver because the hardware has a submission
> queue itself. There's no sense adding a software queue when entries can
> just be placed on the hardware queue. This is the same as similar dma
> engine drivers which came before it: ioat and plx.
>
> The patchset has been rebased on v6.19-rc1.

This still looks good to me.